Kick the Habit: A UN Guide to Climate Neutrality

Emissions by gas

Thousand million tonnes of CO 2

equivalent per year

(1970-2004 period)

40

CO 2

other

35

17%

from deforestation, logging and peat fires

30

CO 2 : Carbon dioxide CH 4 : Methane N 2 O: Nitrous oxide PFCs: Perfluorocarbons HFCs: Hydrofluorocarbons SF 6 : Sulphur hexafluoride

25

20

57%

from fossil fuel use

15

10

CH 4

HFCs PFCs SF 6

N 2

0

5

0

77%

14%

8% 1%

Source: IPCC Fourth Assessment Report, Working Group III Report: Mitigation of Climate Change; 2007 (figure adapted from Olivier et al., 2005; 2006; Hooijer et al., 2006).

INTRODUCTION KICK THE HABIT

17